This is a stylish multi-function writing instrument with a marble pattern, featuring a knock and twist mechanism. Production has now ended. To select a pen, look down at the selection mark on the top and press the cap; the pen tip of the corresponding color will appear. To retract the pen tip, hold the barrel and twist the cap. BKHE-500R Tip: 0.7mm, 2-color ballpoint pen (black, red) + 0.5mm mechanical pencil Size: Maximum diameter φ11.2mm / Total length 138mm Weight: 25.9g Both the ballpoint pen and mechanical pencil are in working condition. The ballpoint pen has a slightly stiffer writing feel, possibly due to age. It is compatible with the current BRFS-10 series. The eraser attached to the top crown appears to be almost unused. Regarding the barrel, although it's difficult to see in the photos, there are some scratches that appear to have been caused by opening and closing, as it has been stored in a drawer for a long time. Please refrain from purchasing if you are looking for a perfect item. Shipping will be via Yu-Packet Post Mini. Thank you.